\(\left[\left(6x-39\right):3\right]\cdot28=5628\)
\(\left(6x-39\right):3=5628:28=201\)
\(6x-39=201\cdot3=603\)
\(6x=603+39=642\)
\(x=642:3=214\)
Vậy \(x=214\)
\(\left[\left(6x-39\right):3\right]\cdot28=5628\)
\(\Rightarrow\left(6x-36\right):3=5628:28=201\)
\(\Rightarrow\left(6x-36\right)=21\cdot3\)
\(\Rightarrow6x-36=63\)
\(\Rightarrow6x=63+36\)
\(\Rightarrow6x=99\)
\(\Rightarrow x=16,5\)
mk giải luôn ạ
(6x-39):3=5628:28
(6x-39):3=201
6x-39=201.3
6x-39=603
6x=603+39
6x=642
=>x=107
vậy x=107
[ ( 6x - 39 ] . 28 = 5628
[ (6x - 39 ) ] = 5628 / 28
______________= 201
6x = 201 +39
6x = 240
x = 240 / 60
x = 40
107 là đúng đấy bạn còn lại là sai hết
[ ( 6x - 39 ) : 3 ] .28 = 5268
[ ( 6x - 39 ) : 3 = 5268 : 28 = 201
( 6x - 39 ) = 201 . 3 = 603
6x = 603 + 39 = 642
x = 642 : 6
x = 107
